JPH05616Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field] The present invention relates to a closing delay device for a self-closing faucet.

[Conventional technology and its problems]

Conventionally, so-called self-closing faucets have been widely used, which open the faucet only as long as it is pressed and then automatically close it due to the elasticity of a return spring when the pressure is stopped. Some self-closing faucets are known to be equipped with a mechanism that allows the desired hot water to be obtained by not closing the faucet all at once due to the elasticity of the return spring, but gradually closing the faucet even after the pressure is stopped, i.e., one equipped with a closure delay device. . For example, in 1987
-94959 Publication, Japanese Utility Model Application Publication No. 59-152258, Japanese Patent Application Publication No. 58-106281, Japanese Patent Application Publication No. 1977-77982,
Improvements have been introduced in publications such as Utility Model Application Publication No. 11781/1981.

However, these conventional closure delay devices
The device includes a pressurized chamber to which pressurized hot water is gradually supplied to close the valve body, and a first return spring provided within the pressurized chamber, and the valve body is opened by coming into contact with the valve body. Since the structure consists of a push rod equipped with a second return spring for opening the bottle, when pressing to open the bottle, the pressure is applied against the elasticity of the two return springs, so the pressing force for opening the bottle is reduced. There were complaints that the amount was excessive.

[Means for solving problems]

Therefore, this invention was devised to eliminate such dissatisfaction, and while equipped with a closure delay device,
To provide an inexpensive self-closing faucet with a structure in which the faucet is pressed against only the elasticity of one return spring when the faucet is opened, and in particular has a simplified structure.

In this specification, hot water is used, but it goes without saying that water or hot water alone is also included.

Hereinafter, the structure of the present invention will be explained in detail with reference to embodiments shown in the accompanying drawings. Figure 1 is a front view of an embodiment in which the self-closing faucet of the present invention is applied to a shower switching mixer faucet, Figure 2 is a cross-sectional view of Figure 1, and Figure 3 is a cross-sectional view of Figure 1. A side view in the direction of arrow A is shown.

First, to explain the outline of this embodiment, 1 is a mixing faucet body formed in a box shape, with a temperature control knob 2 protruding from one side, a hot water conduit 3 communicating with a water heater on the back side, and A water conduit 4 that communicates with the water pipe is protruded, and a shower switching handle 5 is located in the center of the front.
It is pivotally supported to be rotatable in a plane perpendicular to the shower chamber wall surface a. At the center of the lower surface of the mixing faucet main body 1, a valve box 7 for a collar, with a collar 6 opened downward, is suspended. The shower conduit 8 to the upper shower is opened at the lower surface of one side of the mixing faucet main body 1, as shown in FIGS. 1 and 2. Therefore, hot water is introduced into the mixing faucet main body 1 through the hot water conduit 3 and the water conduit 4, and the temperature is adjusted with the adjustment knob 2.
Alternatively, divert the outflow to an upper shower head (not shown). Furthermore, by rotating the handle 5 to a position slightly lower than the front, these outflows can be stopped.

Next, to explain these members in detail, on the back side of the mixing faucet body 1, there is a hot water inlet 9 into which the hot water conduit 3 is screwed, and a water inlet 10 into which the water conduit 4 is screwed.
(See Figure 2) are drilled in each case, and the hot water inlet 9 is
communicates via a hot water introduction path 11 with a water chamber 13 of a spool 12 whose pressure is automatically adjusted by positioning, and the water introduction port 10 communicates with a water chamber 15 of the spool 12 via a water introduction path 14. are doing. The spool 12 is partitioned by a central wall 16 to form a water chamber 13 and a water chamber 15, and is slidably fitted into a sleeve 17. A mirror plate 18 is provided on the end surface of the sleeve 17 on the hot water side, and the hot water in the hot water chamber 13 is passed through the mirror plate 18.
The hot water flows out to the hot water outlet path 19 through the. The hot water outlet path 19
is in communication with another hot water outlet path 19' via a jacket (not shown). Further, the water chamber 15 of the sleeve 17 is in direct communication with the water outlet path 20. The water outlet passage 20 is connected to the hot water mixing chamber 2 through a hard rubber valve body 22 or a poppet valve equipped with an O-ring.
It is connected to 1. The valve body 22 is connected to a valve stem 24 having a threaded portion 23, and the valve stem 24 protrudes and is fixed inside the temperature adjustment knob 2. Therefore, when the temperature adjustment knob 2 is rotated, the valve body 22 is moved into the water outlet path 20 by the screw portion 23 screwing forward and backward.
Open and close the opening. Depending on the degree of opening and closing of the valve body 22, a pressure difference is generated between the water chamber 13 and the water chamber 15 of the spool 12, and the spool 12 slides appropriately within the sleeve 17.
The opening conditions of the plurality of introduction holes 25, 25 drilled in are automatically adjusted.

Next, to explain the flow path to the upper shower head, a ceramic disc valve 26 is provided on the front side of the mixing faucet body 1 to open and close the flow to the upper shower head, and a movable plate 27 of the disc valve 26 is provided. is in communication with a first branch passage 34 branching from the hot water mixing chamber 21. The movable plate 27 has two fan-shaped openings 28 and a radial groove 2.
9 is bored, and a forked portion at one end of the rotating shaft 30 is fitted into the groove 29 (see FIG. 4). The fixing plate 31 of the disc valve 26 also has a fan-shaped opening 32.
is bored, and the fixed plate 31 side communicates with the shower conduit 8. The other end of the rotation shaft 30 is inserted as a rotation support portion of the handle 5, so that the base of the handle 5 is loosely fitted therein. A cutout 30' is formed at the end of the cutout 30'.
0', the core material 32 is locked with some play (approximately 12 degrees) with respect to rotation. The core material 32 is screwed into the base of the handle 5 and fixed thereto. Therefore, when the handle 5 is rotated, the rotation shaft 30 is rotated by the core material 32 after some play.

Note that a pressing portion 33 is provided protruding from the lower surface of the handle 5.

Next, to explain the flow path of the flush 6, as shown in FIGS. 2 and 3, the hot water mixing chamber 2
A second branching path 35 branching downward from the valve 1 communicates with the valve box 7 (self-closing faucet valve box). The valve box 7 is mainly composed of a bottomed cylindrical valve 37 having a large number of communication holes 36, and is opened and closed by sliding the bottomed cylindrical valve 37 in the axial direction. The axis of the bottomed cylindrical valve 37 is positioned perpendicular to the wall a of the shower chamber and is pressed toward the wall a. A valve shaft 38 is penetrated and integrated with the axis of the bottomed cylindrical valve 37, a hollow chamber 39 is bored in the valve shaft 38 to an intermediate position, and a check valve 40 is built in the hollow chamber 39, The check valve 40 is always pressed to be closed by a check valve spring 41. The check valve 40 has a through hole 4
2, and a needle valve 43 is inserted into the through hole 42 so as to be freely inserted and removed. The needle valve 43 projects from the adjusting spindle 44 . The hollow chamber 39
communicates with the inside of the bottomed cylindrical valve 37 via the first branch hole 45, and the hollow chamber 39 communicates with the inside of the bottomed cylindrical valve 37 via the first branch hole 45.
It communicates with the balance chamber 47 via 6.

The balance chamber 47 is surrounded by the valve box 7 and the bottom 48 of the bottomed cylindrical valve 37, and the balance chamber 47 can be expanded and contracted by sliding of the bottomed cylindrical valve 37. . An inlet 49 communicating with the second branch path 35 is opened in the valve box 7 for the callan,
The valve box 7 and the bottomed cylindrical valve 37 are made watertight with a large number of O-ring seals 50, 50, . . . .

51 is a return spring, and 52 is a spring receiver for the return spring, which is integrally engaged with the valve shaft 38.
53 is a contact ball, and 54 and 55 are cover bodies.

Since the configuration of this embodiment is as described above, it has the following effects.

[When not in use]

When the shower switching mixer faucet is not in use, the shower switching handle 5 is placed in the position shown in Figure 3, and the hot water filling the hot water mixing chamber 21 and the flush valve box 7 flows out from the flush valve 6 and the shower conduit 8. I won't let you.

[Use shower]

If you wish to use the upper shower head now, lift the handle 5 by rotating it approximately 90 degrees upwards as shown in the third figure. As a result, the rotation axis 30 in FIG.
is rotated, and the opening 28 of the movable plate 27 and the fixed plate 3
When the opening 32 of the shower head 1 is aligned, that is, when the disc valve 26 is opened, the hot water in the hot water mixing chamber 21 passes through the first branch passage 34, flows out from the shower conduit 8, and is fixed to the conduit 8. shower hose,
Water is discharged from a shower head (none of which is shown).

[Using Karan]

Next, to supply hot water to a tub or the like using the plunger 6, move the handle 5 approximately below the neutral position.
When the valve is rotated by 20 degrees, the pressing member 33 continues to press the valve shaft 38 of the bottomed cylindrical valve 37 via the contact ball 53 against the elasticity of the return spring 51 . During that time, the disc valve 26 is closed, so hot water is not discharged from the upper shower head, but the bottomed cylindrical valve 37, pressed by the pressing member 33, has its circulation hole 36 communicating with the collar 6, and the hot water is not discharged from the upper shower head. Spray water on.

In this state, the check valve 40 opens against the check valve spring 41, and the needle valve 43 is inserted into the check valve 40. Therefore, the hot water in the bottomed cylindrical valve 37 enters the hollow chamber 39 and flows from the hollow chamber 39 into the balance chamber 47.

Next, when the pressure on the handle 5 is stopped, the bottomed cylindrical valve 37 tends to close due to the elasticity of the return spring 51. In other words, when the collar 6 is closed, the return spring 51 closes the bottomed cylindrical valve 37.
, so the check valve 40 closes. Therefore, the hollow chamber 39 and the balance chamber 47
The hot water inside cannot return through the check valve 40,
The bottomed cylindrical valve 3 gradually closes while receiving water flow resistance from the narrow gap between the through hole 42 and the needle valve 43.
It will return within 7. As a result, the bottomed cylindrical valve 3
7 is gradually seated without being closed all at once, and in the meantime hot water continues to be discharged from the kalan 6.
In order to further lengthen the closing time, the needle valve 43 is inserted into the through hole 42.
Increase the amount of insertion. That is, the axial position of the needle valve 43 is adjusted by the adjustment spindle 44. Next, when the hot water in the balance chamber 47 and the hollow chamber 39 loses its pressing force against the return spring 51, the bottomed cylindrical valve 37 closes.

Although the closure delay device of this embodiment has been described as being attached to a shower switching mixer faucet, the present invention is not limited thereto and can be applied to any self-closing faucet.

Further, another embodiment of the present invention is shown in FIG. In this embodiment, parts that are the same as those in the embodiment shown in FIG.
The difference is that a return spring 51' is built into the bottomed cylindrical valve 37, and a cover body for the return spring 51' is omitted.

In summary, since the present invention adopts the structure described in the claims for utility model registration, it has the following effects.

[Effects of the invention] Since the closing delay is performed by delaying the seating of the bottomed cylindrical valve in the balance chamber, the structure is extremely simple and inexpensive without forming a special balance chamber.

Since the balance chamber and the bottomed cylindrical valve are communicated with each other via the check valve, when opening the bottomed cylindrical valve, it is only necessary to press against the elasticity of the return spring, and the opening process is simple. The operation for this purpose requires minimal pressing force.

Since the balance chamber and the inside of the bottomed cylindrical valve are communicated through the pore, closing of the valve can be delayed.

[Brief explanation of the drawing]

Fig. 1 is a front view of an embodiment of the present invention, Fig. 2 is a cross-sectional view of Fig. 1, Fig. 3 is a side view taken along arrow A including the cross-section of Fig. 1, and Fig. 4 is a view of Fig. 2. FIG. 5 shows a sectional view of another embodiment of the present invention. 6...Karan, 7...Karan valve box, 36...
Flow hole, 37...bottomed cylindrical valve, 40...check valve,
47... Balance chamber, 48... Bottom, 51... Return spring.

Claims (1)

[Scope of utility model registration request] The bottle opens only as long as the button is pressed, and the return spring 51
In a self-closing faucet that automatically closes with the elasticity of the faucet, a bottomed cylindrical valve 37 with a flow hole 36 opened in its body is placed in a valve box 7 with an inlet and an outlet open. It is slidably built in and opened and closed by sliding the bottomed cylindrical valve 37 so that the inside and outside of the bottomed cylindrical valve 37 communicate with the inlet and the outlet;
A balance chamber 47 is formed by the bottom 48 of the bottomed cylindrical valve 37 and the valve box 7, and the balance chamber 47 and the inside of the bottomed cylindrical valve 37 are connected to the check valve 40 and the pore 42. The valve body 7 of the bottomed cylindrical valve 37 communicates with the valve body 7 through the
A self-closing faucet closing delay device characterized by delaying the seating of a self-closing faucet.